Add MetaInfoManager API, remove MetaQueryStatistic entity bean, refactor query execution stats collection

2024-04-21 10:51:47 +00:00 · 2014-01-19 22:49:18 +13:00
parent 05dcdf162b
commit 6bd8c2bd05
40 changed files with 1375 additions and 1093 deletions
@@ -0,0 +1,154 @@
+
+package com.avaje.ebeaninternal.server.query;
+
+import java.util.concurrent.atomic.AtomicLong;
+
+import com.avaje.ebean.meta.MetaBeanQueryPlanStatistic;
+import com.avaje.ebeaninternal.server.util.LongAdder;
+
+/**
+ * Statistics for a specific query plan that can accumulate. 
+ */
+public final class CQueryPlanStats {
+
+  private final CQueryPlan queryPlan;
+  
+  private final LongAdder count = new LongAdder();
+
+  private final LongAdder totalTime = new LongAdder();
+
+  private final LongAdder totalBeans = new LongAdder();
+
+  private final AtomicLong maxTime = new AtomicLong();
+
+  private final AtomicLong startTime = new AtomicLong(System.currentTimeMillis());
+
+  private long lastQueryTime;
+
+	
+	public CQueryPlanStats(CQueryPlan queryPlan) {
+	  this.queryPlan = queryPlan;
+	}
+
+	public void add(long loadedBeanCount, long timeMicros) {
+		count.increment();
+		totalBeans.add(loadedBeanCount);
+		totalTime.add(timeMicros);
+		if (timeMicros > maxTime.get()) {
+		  // effectively a high water mark
+		  maxTime.set(timeMicros);
+		}
+    lastQueryTime = System.currentTimeMillis();
+	}
+	
+	public void reset() {
+	  count.reset();
+	  totalBeans.reset();
+	  totalTime.reset();
+	  maxTime.set(0);
+	  startTime.set(System.currentTimeMillis());
+	}
+	
+	public long getLastQueryTime() {
+		return lastQueryTime;
+	}
+	
+	public Snapshot getSnapshot(boolean reset) {
+	  // not guaranteed to be consistent  - time gaps between getting each value  
+	  if (reset) {
+	    return new Snapshot(queryPlan, count.sumThenReset(), totalTime.sumThenReset(), totalBeans.sumThenReset(), maxTime.getAndSet(0), startTime.getAndSet(System.currentTimeMillis()), lastQueryTime);
+	  }
+    return new Snapshot(queryPlan, count.sum(), totalTime.sum(), totalBeans.sum(), maxTime.get(), startTime.get(), lastQueryTime);
+	}
+
+	/**
+	 * A snapshot of the current statistics for a query plan.
+	 */
+	public static class Snapshot implements MetaBeanQueryPlanStatistic {
+	  
+	  private final CQueryPlan queryPlan;
+	  private final long count;
+	  private final long totalTime;
+	  private final long totalBeans;
+	  private final long maxTime;  
+	  private final long startTime;
+	  private final long lastQueryTime;
+    
+	  public Snapshot(CQueryPlan queryPlan, long count, long totalTime, long totalBeans, long maxTime, long startTime, long lastQueryTime) {
+      super();
+      this.queryPlan = queryPlan;
+      this.count = count;
+      this.totalTime = totalTime;
+      this.totalBeans = totalBeans;
+      this.maxTime = maxTime;
+      this.startTime = startTime;
+      this.lastQueryTime = lastQueryTime;
+    }
+	  	  
+	  public String toString() {
+	    return queryPlan+" count:"+count+" time:"+totalTime+" maxTime:"+maxTime+" beans:"+totalBeans+" start:"+startTime+" lastQuery:"+lastQueryTime;
+	  }
+	  
+    @Override
+    public Class<?> getBeanType() {
+      return queryPlan.getBeanType();
+    }
+    
+    @Override
+    public long getExecutionCount() {
+      return count;
+    }
+
+    @Override
+    public long getTotalTimeMicros() {
+      return totalTime;
+    }
+
+    @Override
+    public long getTotalLoadedBeans() {
+      return totalBeans;
+    }
+
+    @Override
+    public long getMaxTimeMicros() {
+      return maxTime;
+    }
+
+    @Override
+    public long getCollectionStart() {
+      return startTime;
+    }
+
+    @Override
+    public long getLastQueryTime() {
+      return lastQueryTime;
+    }
+
+    @Override
+    public boolean isAutofetchTuned() {
+      return queryPlan.isAutofetchTuned();
+    }
+
+
+    @Override
+    public int getQueryPlanHash() {
+      return queryPlan.getHash();
+    }
+
+    @Override
+    public String getSql() {
+      return queryPlan.getSql();
+    }
+
+    @Override
+    public long getAvgTimeMicros() {
+      return count < 1 ? 0 : totalTime / count;
+    }
+
+    @Override
+    public long getAvgLoadedBeans() {
+      return count < 1 ? 0 : totalBeans / count;
+    }
+	}
+	
+}